1172531225 has 12 divisors (see below), whose sum is σ = 1539465084. Its totient is φ = 882846720.

The previous prime is 1172531179. The next prime is 1172531233. The reversal of 1172531225 is 5221352711.

It can be written as a sum of positive squares in 6 ways, for example, as 122058304 + 1050472921 = 11048^2 + 32411^2 .

It is not a de Polignac number, because 1172531225 - 2¹² = 1172527129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1379024 + ... + 1379873.

It is an arithmetic number, because the mean of its divisors is an integer number (128288757).

Almost surely, 2^1172531225 is an apocalyptic number.

It is an amenable number.

1172531225 is a deficient number, since it is larger than the sum of its proper divisors (366933859).

1172531225 is a wasteful number, since it uses less digits than its factorization.

1172531225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758924 (or 2758919 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 1172531225 is about 34242.2432822384. The cubic root of 1172531225 is about 1054.4875883633.

Adding to 1172531225 its reverse (5221352711), we get a palindrome (6393883936).

The spelling of 1172531225 in words is "one billion, one hundred seventy-two million, five hundred thirty-one thousand, two hundred twenty-five".